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arXiv · 1802.08967

Shape Control for Experimental Continuation

R. M. Neville·R. M. J. Groh·A. Pirrera·M. Schenk
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Abstract

An experimental method has been developed to locate unstable equilibria of nonlinear structures quasi-statically. The technique involves loading a structure by application of either a force or a displacement at a main actuation point, while simultaneously controlling the overall shape using additional probe points. The method is applied to a shallow arch, and unstable segments of its equilibrium path are identified experimentally for the first time. Shape control is a fundamental building block for the experimental---as opposed to numerical---continuation of nonlinear structures, which will significantly expand our ability to measure their mechanical response.

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R. M. Neville, R. M. J. Groh, A. Pirrera, M. Schenk. 2018-02-25. Shape Control for Experimental Continuation. https://doi.org/10.1103/physrevlett.120.254101

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